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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-11 12:13:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-11 12:13:55 -0700 |
| commit | f7cca14bcec49989bcfe7cf2135ac719352d7022 (patch) | |
| tree | 2c17c70671d1d7c55ba45ede7ea16ccfb89cef2e /Documentation | |
| parent | b70c9d37f6b5e539798699ad4b48ed3fcd9ce282 (diff) | |
| parent | 4a2e84c6ed85434ce7843e4844b4d3263f7e233b (diff) | |
| download | linux-f7cca14bcec49989bcfe7cf2135ac719352d7022.tar.bz2 | |
Merge tag 'rpmsg-v4.18' of git://github.com/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This migrates rpmsg to use SPDX license headers and fixes a
use-after-free in SMD"
* tag 'rpmsg-v4.18' of git://github.com/andersson/remoteproc:
rpmsg: smd: do not use mananged resources for endpoints and channels
rpmsg: char: Switch to SPDX license identifier
rpmsg: glink: Switch to SPDX license identifier
rpmsg: smd: Switch to SPDX license identifier
rpmsg: virtio_rpmsg_bus: Switch to SPDX license identifier
rpmsg: Switch to SPDX license identifier
rpmsg: qcom_smd: Access APCS through mailbox framework
rpmsg: Add driver_override device attribute for rpmsg_device
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-rpmsg | 20 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt | 8 |
2 files changed, 27 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rpmsg b/Documentation/ABI/testing/sysfs-bus-rpmsg index 189e419a5a2d..990fcc420935 100644 --- a/Documentation/ABI/testing/sysfs-bus-rpmsg +++ b/Documentation/ABI/testing/sysfs-bus-rpmsg @@ -73,3 +73,23 @@ Description: This sysfs entry tells us whether the channel is a local server channel that is announced (values are either true or false). + +What: /sys/bus/rpmsg/devices/.../driver_override +Date: April 2018 +KernelVersion: 4.18 +Contact: Bjorn Andersson <bjorn.andersson@linaro.org> +Description: + Every rpmsg device is a communication channel with a remote + processor. Channels are identified by a textual name (see + /sys/bus/rpmsg/devices/.../name above) and have a local + ("source") rpmsg address, and remote ("destination") rpmsg + address. + + The listening entity (or client) which communicates with a + remote processor is referred as rpmsg driver. The rpmsg device + and rpmsg driver are matched based on rpmsg device name and + rpmsg driver ID table. + + This sysfs entry allows the rpmsg driver for a rpmsg device + to be specified which will override standard OF, ID table + and name matching. diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt index ea1dc75ec9ea..234ae2256501 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt @@ -22,9 +22,15 @@ The edge is described by the following properties: Definition: should specify the IRQ used by the remote processor to signal this processor about communication related updates -- qcom,ipc: +- mboxes: Usage: required Value type: <prop-encoded-array> + Definition: reference to the associated doorbell in APCS, as described + in mailbox/mailbox.txt + +- qcom,ipc: + Usage: required, unless mboxes is specified + Value type: <prop-encoded-array> Definition: three entries specifying the outgoing ipc bit used for signaling the remote processor: - phandle to a syscon node representing the apcs registers |